CN102801286A - Switch driving circuit - Google Patents
Switch driving circuit Download PDFInfo
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- CN102801286A CN102801286A CN2012102974663A CN201210297466A CN102801286A CN 102801286 A CN102801286 A CN 102801286A CN 2012102974663 A CN2012102974663 A CN 2012102974663A CN 201210297466 A CN201210297466 A CN 201210297466A CN 102801286 A CN102801286 A CN 102801286A
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- power switch
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- type power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K17/689—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit
- H03K17/691—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit using transformer coupling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/06—Circuits specially adapted for rendering non-conductive gas discharge tubes or equivalent semiconductor devices, e.g. thyratrons, thyristors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electronic Switches (AREA)
- Power Conversion In General (AREA)
Abstract
一种开关驱动电路，用以驱动一全控型功率开关组合，开关驱动电路包含第一脉宽调变单元、高压隔离脉冲变压模块以及多个输出模块。高压隔离脉冲变压模块包含一磁芯单元以一对多方式连接到多个输出模块，或是包含多个磁芯单元以一对一方式连接到多个输出模块。多个输出模块各自包含第二脉宽调变单元以及驱动功率放大单元。该全控型功率开关组合包含多个全控型功率开关元件，该驱动功率放大单元耦接于该第二脉宽调变单元与其中一个全控型功率开关元件之间。
A switch driving circuit is used to drive a fully controlled power switch combination, the switch driving circuit includes a first pulse width modulation unit, a high-voltage isolation pulse transformer module and a plurality of output modules. The high-voltage isolation pulse transformer module includes a magnetic core unit connected to a plurality of output modules in a one-to-many manner, or includes a plurality of magnetic core units connected to a plurality of output modules in a one-to-one manner. The plurality of output modules each include a second pulse width modulation unit and a driving power amplifier unit. The fully controlled power switch combination includes a plurality of fully controlled power switch elements, and the driving power amplifier unit is coupled between the second pulse width modulation unit and one of the fully controlled power switch elements.
Description
Technical field
The invention relates to a kind of switch driving circuit, and particularly relevant for a kind of switch driving circuit in order to the combination of driving full-control type power switch component.
Background technology
In the application of great-power electronic device (like industrial computer, server, power equipment etc.), reliability of products there is very high requirement.The index that is commonly used to weigh reliability be the MTBF (mean time between failures, MTBF).The MTBF of electronic installation is big more, and then its reliability is high more.
In the supply of electric power device of present electronic equipment, adopt optical fiber that control signal is delivered to the high-pressure side usually, come the on high-tension side power switch component of the output in the supply of electric power device is carried out switch control.The transfer mode that adopts optical fiber and need not electrically connect can be realized simultaneously between the high-pressure side and low-pressure side to the transformation module, and carry out electrical isolation between each power switch component of high-pressure side, avoids electric power noise therebetween to disturb.
Yet, other electronic components in the system, in general, fiber optical transceiver has the low-down MTBF, thereby optical fiber becomes the bottleneck that the whole system reliability promotes.
Secondly, owing to each power switch component all need be isolated with the low-pressure side and on high-tension side other power switch components that exist together, so the drive signal transmission of each power switch component all needs a unjacketed optical fiber.Therefore, the method that adopts optical fiber to isolate can significantly increase the cost of system and the complexity of structure.
In addition, because optical fiber transmission meeting brings long delay time to signal, and then cause the consistency (or synchronism) when transmitting same signal relatively poor.Under to the coherence request condition with higher, can influence the safe and reliable work of power switch component.
Adopt magnetic to isolate and replace optical fiber; Carry out the drive signal transmission; Realize electrical isolation, can significantly improve the reliability of system, the consistency that reduces system cost, simplied system structure, minimizing delay time and improve signal, efficiently solve and adopt optical fiber to isolate the subject matter of being brought.
Adopt magnetic to isolate the method for transmitting the tandem tap unit drive signals, in the tandem drive circuit of half control type power switch component, application was arranged once.For example, with the transformer of driving signal through connecting of low-pressure side, the trigger impulse that will have driving force is delivered to the high-pressure side to drive a plurality of half control type power switch components of series connection.More common half control type power switch component such as thyristor (Silicon Controlled Rectifier, SCR).
Because the characteristic of half control type power switch component, thyristor to the requirement of its drive signal is: (1) only need provide its conducting of very narrow pulse-triggered to get final product, and need not cut-off signals, turn-offs because of half control type power switch component can't see through the driving signal; And drive signal and driving power can be transmitted through pulse transformer simultaneously because the driving signal pulsewidth of half control type power switch component is narrower in (2).
On the other hand, there are many differences to driving the requirement of signal in the full-control type power switch component with half control type power switch component, for example: the opening, turn-off by drive signal and control of (1) full-control type power switch component; (2) the full-control type power switch component need provide a stable high voltage accurate position when conducting, and an accurate position of stable low-voltage need be provided when turn-offing usually; And (3) can come widely than the drive signal that half control type power switch component (like SCR) adopts for the drive signal pulsewidth of full-control type device for power switching, therefore, and must be on the full-control type device for power switching with drive signal and separately transmission of driving power.
Therefore, the method that adopts magnetic to isolate the drive signal of transmitting half control type power switch component (like SCR) in the known technology can't be overlapped and is used for the full-control type power switch component.
Summary of the invention
For solving the problem of known technology; The present invention proposes a kind of switch driving circuit that adopts the magnetic isolation method to transmit full-control type power switch component combination drive signal, with thinking that the combination of full-control type power switch component provides fast, stablizes and drive reliably signal.
One side of the present invention is that a kind of switch driving circuit is being provided, and in order to drive full-control type power switch combination, this switch driving circuit comprises one first PWM unit, a high pressure is isolated pulse transforming module and a plurality of output module.High pressure is isolated the pulse transforming module and is comprised a magnetic core unit, is set around primary side coiling and the coiling of a plurality of secondary side on this magnetic core unit.This primary side coiling is coupled to this first PWM unit.A plurality of output modules each self-contained one second PWM unit and a driving power amplifying unit.These a plurality of secondary side coilings are coupled to this second PWM unit of these a plurality of output modules respectively.This full-control type power switch combination comprises a plurality of full-control type power switch components, and this driving power amplifying unit is coupled between this second PWM unit and one of them the full-control type power switch component.
According to one embodiment of the invention; These a plurality of full-control type power switch components in this full-control type power switch combination are one another in series or are coupled to the upward pipe of a brachium pontis in the single-phase full bridge circuit and the following pipe of another brachium pontis, a plurality of driving output signals to these a plurality of full-control type power switch components that these a plurality of output modules produce same phase respectively and are isolated from each other.
According to one embodiment of the invention, one drives the input that input signal inputs to this switch driving circuit, and this first PWM unit couples this input, converts a narrow pulsewidth signal in order to should drive input signal.In this embodiment; This driving input signal is a PWM type signal; This narrow pulsewidth signal comprises a plurality of positive pulses and a plurality of negative pulse; To driving a plurality of rising edges of input signal, these a plurality of negative pulses are respectively to driving a plurality of falling edges of input signal respectively for these a plurality of positive pulses.
Another aspect of the present invention is that a kind of switch driving circuit is being provided; In order to drive full-control type power switch combination; This full-control type power switch combination comprises a plurality of full-control type power switch components, and this switch driving circuit comprises one first PWM unit, a high pressure is isolated pulse transforming module and a plurality of output module.High pressure is isolated the pulse transforming module and is comprised a plurality of magnetic cores unit, the coiling of a plurality of primary side and the coiling of a plurality of secondary side.Be arranged with respectively on each this a plurality of magnetic cores unit this a plurality of primary sides coiling wherein one and should a plurality of secondary sides coilings wherein one, be coupled to this first PWM unit after these a plurality of primary sides coilings are connected in series.A plurality of output modules each self-contained one second PWM unit and a driving power amplifying unit.These a plurality of secondary side coilings are coupled to this second PWM unit of these a plurality of output modules respectively.The driving power amplifying unit is coupled between this second PWM unit and one of them the full-control type power switch component.
According to one embodiment of the invention; These a plurality of full-control type power switch components in this full-control type power switch combination are one another in series; Or be coupled to the following pipe of going up pipe and another brachium pontis of a brachium pontis in the single-phase full bridge circuit, a plurality of driving output signals to these a plurality of full-control type power switch components that these a plurality of output modules produce same phase respectively and are isolated from each other.
According to one embodiment of the invention, one drives the input that input signal inputs to this switch driving circuit, and this first PWM unit couples this input, converts a narrow pulsewidth signal in order to should drive input signal.In this embodiment; This driving input signal is a PWM type signal; This narrow pulsewidth signal comprises a plurality of positive pulses and a plurality of negative pulse; To driving a plurality of rising edges of input signal, these a plurality of negative pulses are respectively to driving a plurality of falling edges of input signal respectively for these a plurality of positive pulses.
Description of drawings
Fig. 1 illustrates the functional block diagram according to a kind of switch driving circuit in one embodiment of the invention;
Fig. 2 illustrates the waveform sketch map according to each signal in the switch driving circuit in one embodiment of the invention;
Fig. 3 illustrates according to the present invention first specific embodiment mesohigh and isolates the configuration diagram between pulse transforming module and a plurality of output module;
Fig. 4 illustrates according to the present invention second specific embodiment mesohigh and isolates the configuration diagram between pulse transforming module and a plurality of output module;
Fig. 5 illustrates the sketch map according to switch driving circuit and full-control type power switch combination in first operational instances of the present invention;
Fig. 6 illustrates the sketch map according to switch driving circuit and full-control type power switch combination in first operational instances of the present invention; And
Fig. 7 illustrates the sketch map according to switch driving circuit and full-control type power switch combination in first operational instances of the present invention.
[primary clustering symbol description]
The present invention:
100: switch driving circuit
120: the first PWM unit
140,140a, 140b: high pressure is isolated the pulse transforming module
142: the magnetic core unit
W1: primary side coiling
W2: secondary side coiling
160: output module
162: the second PWM unit
164: the driving power amplifying unit
200,200a, 200b, 200c: full-control type power switch combination
202: the full-control type power switch component
204: the single-phase full bridge circuit
220: driving stage
DRin: drive input signal
NPW1, NPW2: narrow pulsewidth signal
DRcon: drive controlling signal
DRout, DRout1, DRout2: drive output signal
Embodiment
Below will disclose a plurality of execution mode of the present invention with accompanying drawing, for the purpose of offering some clarification on, the details on many practices will explanation in the lump in following narration.Yet, should be appreciated that the details on these practices is not used with restriction the present invention.That is to say that in part execution mode of the present invention, the details on these practices is inessential.In addition, for the purpose of simplifying accompanying drawing, some known habitual structures and element will illustrate with the mode of simple signal in the accompanying drawings.
See also Fig. 1, it illustrates the functional block diagram according to a kind of switch driving circuit 100 in one embodiment of the invention.As shown in Figure 1, switch driving circuit 100 comprises the first PWM unit 120, high pressure is isolated pulse transforming module 140 and a plurality of output module 160.Wherein, Switch driving circuit 100 is coupled between driving stage 220 and the full-control type power switch combination 200; Convert a plurality of driving output signal DRout that are isolated from each other in order to the driving input signal DRin that driving stage 220 is provided, a plurality of driving output signal DRout are respectively in order to a plurality of full-control type power switch components 202 in the control full-control type power switch combination 200.In the embodiment of this disclosure of documents, full-control type power switch component 202 can be insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT).
In the present invention, be convenient explanation; Only schematically illustrate two output modules 160 and two full-control type power switch components 202; But this disclosure of documents does not exceed with two groups; In the practical application, switch driving circuit 100 can comprise n group output module 160 a corresponding n full-control type power switch component 202, and wherein n is the positive integer more than 2.
Wherein, switch driving circuit 100 is isolated pulse transforming module 140 through high pressure and between driving input signal DRin and driving output signal DRout, is carried out the magnetic isolation, avoids driving input signal DRin and drive between the output signal DRout influencing each other.In addition, switch driving circuit 100 is isolated pulse transforming module 140 through high pressure and is carried out the magnetic isolation to each other at a plurality of driving output signal DRout, avoids driving between output signal DRout and other driving output signals DRout influencing each other.
Please consult Fig. 2 in the lump, it illustrates the waveform sketch map according to each signal in the switch driving circuit in one embodiment of the invention 100.In the embodiment of Fig. 2, driving stage 220 provides and drives the input that input signal DRin inputs to switch driving circuit 100, and the first PWM unit 120 is coupled to the input of switch driving circuit 100.In this embodiment, driving input signal DRin is PWM type (pulse-width modulation, PWM) signal; The input signal DRin that will drive of the first PWM unit, 120 PWM types converts narrow pulsewidth signal NPW1 to, wherein narrow pulsewidth signal NPW1 comprise a plurality of positive pulses (like the positive pulse P1 among Fig. 2, P3) and a plurality of negative pulse (like the negative pulse P2 among Fig. 2; P4); These a plurality of positive pulses (P1, P3) the corresponding respectively a plurality of rising edges (rising edge) that drive input signal DRin, these a plurality of negative pulse (P2; P4) the corresponding respectively a plurality of falling edges (falling edge) that drive input signal DRin are as shown in Figure 2.The narrow pulsewidth signal NPW1 that the first PWM unit 120 converts is sent to the primary side (primary side) that high pressure is isolated pulse transforming module 140.
High pressure is isolated pulse transforming module 140 and is formed a plurality of narrow pulsewidth signal NPW2 with magnetic induction way at secondary side; And export a plurality of output modules 160 respectively to, be implemented in the magnetic isolation effect between primary side (in part embodiment, can be low-pressure side) and the secondary side (in part embodiment, can be the high-pressure side) whereby.
A plurality of narrow pulsewidth signal NPW2 are sent to 162, the second PWM unit 162, the second PWM unit in each output module 160 respectively in order to be converted into the drive controlling signal DRcon of PWM type (PWM).Driving power amplifying unit 164 in each output module 160 carries out power amplification to drive controlling signal DRcon subsequently, and generation has the driving output signal DRout of positive and negative drive potential and is sent to full-control type power switch combination 200 one of them full-control type power switch component 202 separately.
Please consult Fig. 3 in the lump, it illustrates according to this disclosure of documents first specific embodiment mesohigh isolates the configuration diagram between pulse transforming module 140a and a plurality of output module 160.As shown in Figure 3; Isolate pulse transforming module 140a (corresponding diagram 1 is isolated pulse transforming module 140 with the high pressure among Fig. 2) in the first specific embodiment mesohigh and comprise a magnetic core unit 142, primary side coiling W1 and a plurality of secondary side coiling W2, wherein primary side coiling W1 is set around on the magnetic core unit 142 and is coupled to the first PWM unit 120.A plurality of secondary side coiling W2 all are set around on the magnetic core unit 142 and are coupled to the second PWM unit 162 of each output module 160 respectively.
Thus, like Fig. 1, Fig. 2 and shown in Figure 3, can the narrow pulsewidth signal NPW1 of primary side be formed a plurality of narrow pulsewidth signal NPW2 with magnetic induction way at secondary side just high pressure is isolated pulse transforming module 140a, and export a plurality of output modules 160 respectively to.Whereby, can between narrow pulsewidth signal NPW1 and each narrow pulsewidth signal NPW2, form magnetic and isolate, and can form the magnetic isolation to each other at a plurality of narrow pulsewidth signal NPW2.
Subsequently; A plurality of narrow pulsewidth signal NPW2 respectively by the second PWM unit 162 in each output module 160 in order to being converted into the drive controlling signal DRcon of PWM type, and form through the power amplification of driving power amplifying unit 164 and to have the driving output signal DRout of positive and negative drive potential and to be sent to full-control type power switch component 202.
Please consult Fig. 4 in the lump, it illustrates according to the present invention the configuration diagram between second specific embodiment mesohigh isolation pulse transforming module 140b (the high pressure isolation pulse transforming module 140 among corresponding diagram 1 and Fig. 2) and a plurality of output module 160.As shown in Figure 4; Isolate pulse transforming module 140b in the second specific embodiment mesohigh and comprise a plurality of magnetic cores unit 142, a plurality of primary side coiling W1 and a plurality of secondary side coiling W2, be arranged with wherein a primary side coiling W1 and secondary side coiling W2 wherein on each magnetic core unit 142 respectively.Be coupled to this first PWM unit 120 after above-mentioned many primary sides coiling W1 serial connection, among the embodiment like Fig. 4, many primary side coiling W1 are one another in series and are coupled to the first PWM unit 120.A plurality of output module 160 each the self-contained second PWM unit 162 and driving power amplifying units 164.Above-mentioned a plurality of secondary side coiling W2 is coupled to the second PWM unit 162 of these a plurality of output modules 160 respectively.164 of driving power amplifying units are coupled between the second PWM unit 162 and one of them the full-control type power switch component 202.
Thus, high pressure is isolated pulse transforming module 140b just can form a plurality of narrow pulsewidth signal NPW2 with magnetic induction way at secondary side with the narrow pulsewidth signal NPW1 of primary side, and exports a plurality of output modules 160 respectively to.Whereby, can between narrow pulsewidth signal NPW1 and each narrow pulsewidth signal NPW2, form magnetic and isolate, and can form the magnetic isolation to each other at a plurality of narrow pulsewidth signal NPW2.
In sum; First specific embodiment discloses respectively through single magnetic core unit with second specific embodiment and couples framework with the corresponding driving of exporting module of one-to-many manner more; And, see through the driving of exporting module with mode correspondence one to one in many magnetic cores unit more and couple framework.
Below explain that with a plurality of operational instances the present invention drives the running of full-control type power switch combination.
See also Fig. 5, it illustrates the sketch map according to switch driving circuit 100 and full-control type power switch combination 200a in first operational instances of the present invention (the full-control type power switch combination 200 among the corresponding previous embodiment).
In first operational instances as shown in Figure 5, full-control type power switch combination 200a comprises a plurality of full-control type power switch components 202 that are one another in series, its can be respectively insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT).These a plurality of output modules 160 produce same phase and a plurality of driving output signal DRout1 that are isolated from each other and DRout2 to above-mentioned a plurality of full-control type power switch components 202 respectively.
Please consult Fig. 3 and Fig. 4 in the lump; In the first operation embodiment of Fig. 5; The second PWM unit 162 of each output module 160 can be coupled to secondary side coiling W2 (secondary side coiling W2 adopts identical direction of winding); Whereby, can form the driving output signal DRout1 and the DRout2 of same phase.
Then, see also Fig. 6, it illustrates the sketch map according to switch driving circuit 100 and full-control type power switch combination 200b in second operational instances of the present invention (the full-control type power switch combination 200 among the corresponding previous embodiment).
In second operational instances as shown in Figure 6; Full-control type power switch combination 200a comprises a plurality of full-control type power switch components 202 that are coupled to relative both sides in the single-phase full bridge circuit 204 (being respectively the following pipe of going up pipe and another brachium pontis of a brachium pontis in the single-phase full bridge circuit); It can be respectively insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT).A plurality of driving output signal DRout1 and DRout2 that these a plurality of output modules 160 produce same phase respectively and are isolated from each other are sent in the single-phase full bridge circuit 204 of single-phase two level pipe full-control type power switch component 202 (as shown in Figure 6).Similar in appearance to first operational instances, the second PWM unit 162 of each output module 160 can be coupled to the end of the same name (and secondary side coiling W2 can adopt identical direction of winding) of secondary side coiling W2.
See also Fig. 7, it illustrates the sketch map according to switch driving circuit 100 and full-control type power switch combination 200c in the 3rd operational instances of the present invention (the full-control type power switch combination 200 among the corresponding previous embodiment).
In the 3rd operational instances as shown in Figure 7; Full-control type power switch combination 200c comprises (upper and lower two pipes) the full-control type power switch component 202 on two brachium pontis of two level bridge arm circuit; It can be respectively the insulated gate bipolar electric crystal (Insulated Gate Bipolar Transistor, IGBT).
In sum, the present invention proposes a kind of switch driving circuit that adopts the magnetic isolation method to transmit full-control type power switch component combination drive signal, with thinking that the combination of full-control type power switch component provides fast, stablizes and drive reliably signal.
Though the present invention discloses as above with execution mode; Right its is not in order to limit the present invention; Anyly be familiar with this art; Do not breaking away from the spirit and scope of the present invention, when can doing various changes and retouching, so protection scope of the present invention is as the criterion when looking the scope that appending claims defines.
Claims (8)
1. a switch driving circuit is characterized in that, in order to drive full-control type power switch combination, this switch driving circuit comprises:
One first PWM unit;
One high pressure is isolated the pulse transforming module, and it comprises a magnetic core unit, is set around primary side coiling and the coiling of a plurality of secondary side on this magnetic core unit, and wherein this primary side coiling is coupled to this first PWM unit; And
A plurality of output modules, each is self-contained:
One second PWM unit, these a plurality of secondary side coilings are coupled to this second PWM unit of these a plurality of output modules respectively; And
One driving power amplifying unit, this full-control type power switch combination comprises a plurality of full-control type power switch components, and this driving power amplifying unit is coupled between this second PWM unit and one of them the full-control type power switch component.
2. switch driving circuit according to claim 1; It is characterized in that; These a plurality of full-control type power switch components in this full-control type power switch combination are one another in series; Or be coupled to the following pipe of going up pipe and another brachium pontis of a brachium pontis in the single-phase full bridge circuit, a plurality of driving output signals to these a plurality of full-control type power switch components that these a plurality of output modules produce same phase respectively and are isolated from each other.
3. switch driving circuit according to claim 1; It is characterized in that; One drives the input that input signal inputs to this switch driving circuit, and this first PWM unit couples this input, converts a narrow pulsewidth signal in order to should drive input signal.
4. switch driving circuit according to claim 3; It is characterized in that; This driving input signal is a PWM type signal; This narrow pulsewidth signal comprises a plurality of positive pulses and a plurality of negative pulse, and to driving a plurality of rising edges of input signal, these a plurality of negative pulses are respectively to driving a plurality of falling edges of input signal respectively for these a plurality of positive pulses.
5. a switch driving circuit is characterized in that, in order to drive full-control type power switch combination, this full-control type power switch combination comprises a plurality of full-control type power switch components, and this switch driving circuit comprises:
One first PWM unit;
One high pressure is isolated the pulse transforming module; It comprises a plurality of magnetic cores unit, the coiling of a plurality of primary side and the coiling of a plurality of secondary side; Be arranged with respectively on each this a plurality of magnetic cores unit this a plurality of primary sides coiling one of them and should a plurality of secondary sides coilings one of them, these a plurality of primary sides wind the line and all are coupled to this first PWM unit; And
A plurality of output modules, each is self-contained:
One second PWM unit, these a plurality of secondary side coilings are coupled to this second PWM unit of these a plurality of output modules respectively; And
One driving power amplifying unit is coupled between this second PWM unit and one of them the full-control type power switch component.
6. switch driving circuit according to claim 5; It is characterized in that; These a plurality of full-control type power switch components in this full-control type power switch combination are one another in series or are coupled to the upward pipe of a brachium pontis in the single-phase full bridge circuit and the following pipe of another brachium pontis, a plurality of driving output signals to these a plurality of full-control type power switch components that these a plurality of output modules produce same phase respectively and are isolated from each other.
7. switch driving circuit according to claim 5; It is characterized in that; One drives the input that input signal inputs to this switch driving circuit, and this first PWM unit couples this input, converts a narrow pulsewidth signal in order to should drive input signal.
8. switch driving circuit according to claim 7; It is characterized in that; This driving input signal is a PWM type signal; This narrow pulsewidth signal comprises a plurality of positive pulses and a plurality of negative pulse, and to driving a plurality of rising edges of input signal, these a plurality of negative pulses are respectively to driving a plurality of falling edges of input signal respectively for these a plurality of positive pulses.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710493361.8A CN107104581A (en) | 2012-08-20 | 2012-08-20 | Switch driving circuit |
| CN2012102974663A CN102801286A (en) | 2012-08-20 | 2012-08-20 | Switch driving circuit |
| US13/732,811 US8884657B2 (en) | 2012-08-20 | 2013-01-02 | Switch-driving circuit |
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| CN2012102974663A CN102801286A (en) | 2012-08-20 | 2012-08-20 | Switch driving circuit |
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| CN201710493361.8A Division CN107104581A (en) | 2012-08-20 | 2012-08-20 | Switch driving circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135266A (en) * | 2014-06-25 | 2014-11-05 | 台达电子企业管理（上海）有限公司 | Driving device and driving method |
| CN107222190A (en) * | 2015-11-10 | 2017-09-29 | 亚德诺半导体集团 | Combined type isolator and power switch |
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Also Published As
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| US20140049295A1 (en) | 2014-02-20 |
| US8884657B2 (en) | 2014-11-11 |
| CN107104581A (en) | 2017-08-29 |
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